The Sonoma County Trails Challenge is an invitation to discover your Regional Parks.
Download your 2018 Trails Challenge guidebook
(PDF: 4.63 MB)
Hike, run, bike or ride at least 5 featured trails anytime from June through September and get a Trails Challenge T-shirt! The guidebook presents trail notes for 15 parks, turn-by-turn trail directions, maps, and suggestions for themed hikes, including an all-park challenge of more than 50 miles.
Share your trail photos on social media with hashtags #SonomaCountyParks #TrailsChallenge, and you'll be eligible for giveaways of park memberships and REI trail gear.
A limited number of print editions of the 2018 guidebook are available at Regional Parks' Santa Rosa office and at staffed entrances to Spring Lake and Ragle Ranch parks.
Trails Challenge Sponsors